1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2019 MediaTek Inc.
3 *
4 * Author: Felix Fietkau <nbd@nbd.name>
5 * Lorenzo Bianconi <lorenzo@kernel.org>
6 * Sean Wang <sean.wang@mediatek.com>
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/usb.h>
12
13 #include "mt7615.h"
14 #include "mac.h"
15 #include "mcu.h"
16 #include "regs.h"
17
18 static const struct usb_device_id mt7615_device_table[] = {
19 { USB_DEVICE_AND_INTERFACE_INFO(0x0e8d, 0x7663, 0xff, 0xff, 0xff) },
20 { USB_DEVICE_AND_INTERFACE_INFO(0x043e, 0x310c, 0xff, 0xff, 0xff) },
21 { },
22 };
23
mt7663u_rr(struct mt76_dev * dev,u32 addr)24 static u32 mt7663u_rr(struct mt76_dev *dev, u32 addr)
25 {
26 u32 ret;
27
28 mutex_lock(&dev->usb.usb_ctrl_mtx);
29 ret = ___mt76u_rr(dev, MT_VEND_READ_EXT,
30 USB_DIR_IN | USB_TYPE_VENDOR, addr);
31 mutex_unlock(&dev->usb.usb_ctrl_mtx);
32
33 return ret;
34 }
35
mt7663u_wr(struct mt76_dev * dev,u32 addr,u32 val)36 static void mt7663u_wr(struct mt76_dev *dev, u32 addr, u32 val)
37 {
38 mutex_lock(&dev->usb.usb_ctrl_mtx);
39 ___mt76u_wr(dev, MT_VEND_WRITE_EXT,
40 USB_DIR_OUT | USB_TYPE_VENDOR, addr, val);
41 mutex_unlock(&dev->usb.usb_ctrl_mtx);
42 }
43
mt7663u_rmw(struct mt76_dev * dev,u32 addr,u32 mask,u32 val)44 static u32 mt7663u_rmw(struct mt76_dev *dev, u32 addr,
45 u32 mask, u32 val)
46 {
47 mutex_lock(&dev->usb.usb_ctrl_mtx);
48 val |= ___mt76u_rr(dev, MT_VEND_READ_EXT,
49 USB_DIR_IN | USB_TYPE_VENDOR, addr) & ~mask;
50 ___mt76u_wr(dev, MT_VEND_WRITE_EXT,
51 USB_DIR_OUT | USB_TYPE_VENDOR, addr, val);
52 mutex_unlock(&dev->usb.usb_ctrl_mtx);
53
54 return val;
55 }
56
mt7663u_copy(struct mt76_dev * dev,u32 offset,const void * data,int len)57 static void mt7663u_copy(struct mt76_dev *dev, u32 offset,
58 const void *data, int len)
59 {
60 struct mt76_usb *usb = &dev->usb;
61 int ret, i = 0, batch_len;
62 const u8 *val = data;
63
64 len = round_up(len, 4);
65
66 mutex_lock(&usb->usb_ctrl_mtx);
67 while (i < len) {
68 batch_len = min_t(int, usb->data_len, len - i);
69 memcpy(usb->data, val + i, batch_len);
70 ret = __mt76u_vendor_request(dev, MT_VEND_WRITE_EXT,
71 USB_DIR_OUT | USB_TYPE_VENDOR,
72 (offset + i) >> 16, offset + i,
73 usb->data, batch_len);
74 if (ret < 0)
75 break;
76
77 i += batch_len;
78 }
79 mutex_unlock(&usb->usb_ctrl_mtx);
80 }
81
mt7663u_stop(struct ieee80211_hw * hw)82 static void mt7663u_stop(struct ieee80211_hw *hw)
83 {
84 struct mt7615_phy *phy = mt7615_hw_phy(hw);
85 struct mt7615_dev *dev = hw->priv;
86
87 clear_bit(MT76_STATE_RUNNING, &dev->mphy.state);
88 del_timer_sync(&phy->roc_timer);
89 cancel_work_sync(&phy->roc_work);
90 cancel_delayed_work_sync(&phy->scan_work);
91 cancel_delayed_work_sync(&phy->mt76->mac_work);
92 mt76u_stop_tx(&dev->mt76);
93 }
94
mt7663u_cleanup(struct mt7615_dev * dev)95 static void mt7663u_cleanup(struct mt7615_dev *dev)
96 {
97 clear_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
98 mt76u_queues_deinit(&dev->mt76);
99 }
100
mt7663u_init_work(struct work_struct * work)101 static void mt7663u_init_work(struct work_struct *work)
102 {
103 struct mt7615_dev *dev;
104
105 dev = container_of(work, struct mt7615_dev, mcu_work);
106 if (mt7663u_mcu_init(dev))
107 return;
108
109 mt7615_init_work(dev);
110 }
111
mt7663u_probe(struct usb_interface * usb_intf,const struct usb_device_id * id)112 static int mt7663u_probe(struct usb_interface *usb_intf,
113 const struct usb_device_id *id)
114 {
115 static const struct mt76_driver_ops drv_ops = {
116 .txwi_size = MT_USB_TXD_SIZE,
117 .drv_flags = MT_DRV_RX_DMA_HDR | MT_DRV_HW_MGMT_TXQ,
118 .tx_prepare_skb = mt7663_usb_sdio_tx_prepare_skb,
119 .tx_complete_skb = mt7663_usb_sdio_tx_complete_skb,
120 .tx_status_data = mt7663_usb_sdio_tx_status_data,
121 .rx_skb = mt7615_queue_rx_skb,
122 .rx_check = mt7615_rx_check,
123 .sta_add = mt7615_mac_sta_add,
124 .sta_remove = mt7615_mac_sta_remove,
125 .update_survey = mt7615_update_channel,
126 };
127 static struct mt76_bus_ops bus_ops = {
128 .rr = mt7663u_rr,
129 .wr = mt7663u_wr,
130 .rmw = mt7663u_rmw,
131 .read_copy = mt76u_read_copy,
132 .write_copy = mt7663u_copy,
133 .type = MT76_BUS_USB,
134 };
135 struct usb_device *udev = interface_to_usbdev(usb_intf);
136 struct ieee80211_ops *ops;
137 struct mt7615_dev *dev;
138 struct mt76_dev *mdev;
139 int ret;
140
141 ops = devm_kmemdup(&usb_intf->dev, &mt7615_ops, sizeof(mt7615_ops),
142 GFP_KERNEL);
143 if (!ops)
144 return -ENOMEM;
145
146 ops->stop = mt7663u_stop;
147
148 mdev = mt76_alloc_device(&usb_intf->dev, sizeof(*dev), ops, &drv_ops);
149 if (!mdev)
150 return -ENOMEM;
151
152 dev = container_of(mdev, struct mt7615_dev, mt76);
153 udev = usb_get_dev(udev);
154 usb_reset_device(udev);
155
156 usb_set_intfdata(usb_intf, dev);
157
158 INIT_WORK(&dev->mcu_work, mt7663u_init_work);
159 dev->reg_map = mt7663_usb_sdio_reg_map;
160 dev->ops = ops;
161 ret = __mt76u_init(mdev, usb_intf, &bus_ops);
162 if (ret < 0)
163 goto error;
164
165 mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
166 (mt76_rr(dev, MT_HW_REV) & 0xff);
167 dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
168
169 if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
170 FW_STATE_PWR_ON << 1, 500)) {
171 ret = mt7663u_mcu_power_on(dev);
172 if (ret)
173 goto error;
174 } else {
175 set_bit(MT76_STATE_POWER_OFF, &dev->mphy.state);
176 }
177
178 ret = mt76u_alloc_mcu_queue(&dev->mt76);
179 if (ret)
180 goto error;
181
182 ret = mt76u_alloc_queues(&dev->mt76);
183 if (ret)
184 goto error;
185
186 ret = mt7663_usb_sdio_register_device(dev);
187 if (ret)
188 goto error;
189
190 return 0;
191
192 error:
193 mt76u_queues_deinit(&dev->mt76);
194 usb_set_intfdata(usb_intf, NULL);
195 usb_put_dev(interface_to_usbdev(usb_intf));
196
197 mt76_free_device(&dev->mt76);
198
199 return ret;
200 }
201
mt7663u_disconnect(struct usb_interface * usb_intf)202 static void mt7663u_disconnect(struct usb_interface *usb_intf)
203 {
204 struct mt7615_dev *dev = usb_get_intfdata(usb_intf);
205
206 if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
207 return;
208
209 ieee80211_unregister_hw(dev->mt76.hw);
210 mt7663u_cleanup(dev);
211
212 usb_set_intfdata(usb_intf, NULL);
213 usb_put_dev(interface_to_usbdev(usb_intf));
214
215 mt76_free_device(&dev->mt76);
216 }
217
218 #ifdef CONFIG_PM
mt7663u_suspend(struct usb_interface * intf,pm_message_t state)219 static int mt7663u_suspend(struct usb_interface *intf, pm_message_t state)
220 {
221 struct mt7615_dev *dev = usb_get_intfdata(intf);
222
223 if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
224 mt7615_firmware_offload(dev)) {
225 int err;
226
227 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, true);
228 if (err < 0)
229 return err;
230 }
231
232 mt76u_stop_rx(&dev->mt76);
233 mt76u_stop_tx(&dev->mt76);
234
235 return 0;
236 }
237
mt7663u_resume(struct usb_interface * intf)238 static int mt7663u_resume(struct usb_interface *intf)
239 {
240 struct mt7615_dev *dev = usb_get_intfdata(intf);
241 int err;
242
243 err = mt76u_vendor_request(&dev->mt76, MT_VEND_FEATURE_SET,
244 USB_DIR_OUT | USB_TYPE_VENDOR,
245 0x5, 0x0, NULL, 0);
246 if (err)
247 return err;
248
249 err = mt76u_resume_rx(&dev->mt76);
250 if (err < 0)
251 return err;
252
253 if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
254 mt7615_firmware_offload(dev))
255 err = mt76_connac_mcu_set_hif_suspend(&dev->mt76, false);
256
257 return err;
258 }
259 #endif /* CONFIG_PM */
260
261 MODULE_DEVICE_TABLE(usb, mt7615_device_table);
262 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
263 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
264 MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
265 MODULE_FIRMWARE(MT7663_ROM_PATCH);
266
267 static struct usb_driver mt7663u_driver = {
268 .name = KBUILD_MODNAME,
269 .id_table = mt7615_device_table,
270 .probe = mt7663u_probe,
271 .disconnect = mt7663u_disconnect,
272 #ifdef CONFIG_PM
273 .suspend = mt7663u_suspend,
274 .resume = mt7663u_resume,
275 .reset_resume = mt7663u_resume,
276 #endif /* CONFIG_PM */
277 .soft_unbind = 1,
278 .disable_hub_initiated_lpm = 1,
279 };
280 module_usb_driver(mt7663u_driver);
281
282 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
283 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>");
284 MODULE_LICENSE("Dual BSD/GPL");
285